摘要
综述了国内外贝类四倍体育种的研究现状和最新进展。四倍体诱导的方法主要有抑制第 1极体或同时抑制 2个极体的释放、抑制第 1次卵裂、细胞融合、人工雌核发育和利用三倍体诱导四倍体 ,其中利用三倍体获得四倍体是迄今报道的获得具存活力的四倍体的唯一成功方法。四倍体育种中染色体组操作的结果除了产生整倍体外 ,还产生大量的非整倍体。四倍体贝类存活力较低 ,但具有较高的繁殖力 ,能产生较大的生殖细胞 ,并能与二倍体杂交产生 1 0 0 %的三倍体。
The progress and status quo of tepraploid breeding in molluscs in the world is reviewed in this paper. Tetraploids can be yielded by methods such as inhabiting the first polar body, blocking mitosis I, cell fusion, artificial gynogenesis and using eggs from triploids. Using eggs from triploids has been the only successful approach to yielding viable tetraploids reported so far. Manipulation of chromosome in tetraploid breeding resulted in not only euploids, but also a great many aneuploids. Tetraploid molluscs are of low viability but high fecundity and can produce larger gametes. Crosses between tetraploids and diploids can result in 100% triploids.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2004年第2期195-202,共8页
Periodical of Ocean University of China
基金
国家高技术研究发展计划 (2 0 0 1 AA6 2 80 30 )资助
